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<FONT color="green">001</FONT>    /*<a name="line.1"></a>
<FONT color="green">002</FONT>     * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a>
<FONT color="green">003</FONT>     * contributor license agreements.  See the NOTICE file distributed with<a name="line.3"></a>
<FONT color="green">004</FONT>     * this work for additional information regarding copyright ownership.<a name="line.4"></a>
<FONT color="green">005</FONT>     * The ASF licenses this file to You under the Apache License, Version 2.0<a name="line.5"></a>
<FONT color="green">006</FONT>     * (the "License"); you may not use this file except in compliance with<a name="line.6"></a>
<FONT color="green">007</FONT>     * the License.  You may obtain a copy of the License at<a name="line.7"></a>
<FONT color="green">008</FONT>     *<a name="line.8"></a>
<FONT color="green">009</FONT>     *      http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
<FONT color="green">010</FONT>     *<a name="line.10"></a>
<FONT color="green">011</FONT>     * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a>
<FONT color="green">012</FONT>     * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a>
<FONT color="green">013</FONT>     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a>
<FONT color="green">014</FONT>     * See the License for the specific language governing permissions and<a name="line.14"></a>
<FONT color="green">015</FONT>     * limitations under the License.<a name="line.15"></a>
<FONT color="green">016</FONT>     */<a name="line.16"></a>
<FONT color="green">017</FONT>    package org.apache.commons.math3.exception.util;<a name="line.17"></a>
<FONT color="green">018</FONT>    <a name="line.18"></a>
<FONT color="green">019</FONT>    import java.util.List;<a name="line.19"></a>
<FONT color="green">020</FONT>    import java.util.ArrayList;<a name="line.20"></a>
<FONT color="green">021</FONT>    import java.util.Set;<a name="line.21"></a>
<FONT color="green">022</FONT>    import java.util.Map;<a name="line.22"></a>
<FONT color="green">023</FONT>    import java.io.IOException;<a name="line.23"></a>
<FONT color="green">024</FONT>    import java.io.Serializable;<a name="line.24"></a>
<FONT color="green">025</FONT>    import java.io.ObjectOutputStream;<a name="line.25"></a>
<FONT color="green">026</FONT>    import java.io.ObjectInputStream;<a name="line.26"></a>
<FONT color="green">027</FONT>    import java.util.HashMap;<a name="line.27"></a>
<FONT color="green">028</FONT>    import java.text.MessageFormat;<a name="line.28"></a>
<FONT color="green">029</FONT>    import java.util.Locale;<a name="line.29"></a>
<FONT color="green">030</FONT>    <a name="line.30"></a>
<FONT color="green">031</FONT>    /**<a name="line.31"></a>
<FONT color="green">032</FONT>     * Class that contains the actual implementation of the functionality mandated<a name="line.32"></a>
<FONT color="green">033</FONT>     * by the {@link ExceptionContext} interface.<a name="line.33"></a>
<FONT color="green">034</FONT>     * All Commons Math exceptions delegate the interface's methods to this class.<a name="line.34"></a>
<FONT color="green">035</FONT>     *<a name="line.35"></a>
<FONT color="green">036</FONT>     * @since 3.0<a name="line.36"></a>
<FONT color="green">037</FONT>     * @version $Id: ExceptionContext.java 1364388 2012-07-22 18:16:43Z tn $<a name="line.37"></a>
<FONT color="green">038</FONT>     */<a name="line.38"></a>
<FONT color="green">039</FONT>    public class ExceptionContext implements Serializable {<a name="line.39"></a>
<FONT color="green">040</FONT>        /** Serializable version Id. */<a name="line.40"></a>
<FONT color="green">041</FONT>        private static final long serialVersionUID = -6024911025449780478L;<a name="line.41"></a>
<FONT color="green">042</FONT>        /**<a name="line.42"></a>
<FONT color="green">043</FONT>         * The throwable to which this context refers to.<a name="line.43"></a>
<FONT color="green">044</FONT>         */<a name="line.44"></a>
<FONT color="green">045</FONT>        private Throwable throwable;<a name="line.45"></a>
<FONT color="green">046</FONT>        /**<a name="line.46"></a>
<FONT color="green">047</FONT>         * Various informations that enrich the informative message.<a name="line.47"></a>
<FONT color="green">048</FONT>         */<a name="line.48"></a>
<FONT color="green">049</FONT>        private List&lt;Localizable&gt; msgPatterns;<a name="line.49"></a>
<FONT color="green">050</FONT>        /**<a name="line.50"></a>
<FONT color="green">051</FONT>         * Various informations that enrich the informative message.<a name="line.51"></a>
<FONT color="green">052</FONT>         * The arguments will replace the corresponding place-holders in<a name="line.52"></a>
<FONT color="green">053</FONT>         * {@link #msgPatterns}.<a name="line.53"></a>
<FONT color="green">054</FONT>         */<a name="line.54"></a>
<FONT color="green">055</FONT>        private List&lt;Object[]&gt; msgArguments;<a name="line.55"></a>
<FONT color="green">056</FONT>        /**<a name="line.56"></a>
<FONT color="green">057</FONT>         * Arbitrary context information.<a name="line.57"></a>
<FONT color="green">058</FONT>         */<a name="line.58"></a>
<FONT color="green">059</FONT>        private Map&lt;String, Object&gt; context;<a name="line.59"></a>
<FONT color="green">060</FONT>    <a name="line.60"></a>
<FONT color="green">061</FONT>        /** Simple constructor.<a name="line.61"></a>
<FONT color="green">062</FONT>         * @param throwable the exception this context refers too<a name="line.62"></a>
<FONT color="green">063</FONT>         */<a name="line.63"></a>
<FONT color="green">064</FONT>        public ExceptionContext(final Throwable throwable) {<a name="line.64"></a>
<FONT color="green">065</FONT>            this.throwable = throwable;<a name="line.65"></a>
<FONT color="green">066</FONT>            msgPatterns    = new ArrayList&lt;Localizable&gt;();<a name="line.66"></a>
<FONT color="green">067</FONT>            msgArguments   = new ArrayList&lt;Object[]&gt;();<a name="line.67"></a>
<FONT color="green">068</FONT>            context        = new HashMap&lt;String, Object&gt;();<a name="line.68"></a>
<FONT color="green">069</FONT>        }<a name="line.69"></a>
<FONT color="green">070</FONT>    <a name="line.70"></a>
<FONT color="green">071</FONT>        /** Get a reference to the exception to which the context relates.<a name="line.71"></a>
<FONT color="green">072</FONT>         * @return a reference to the exception to which the context relates<a name="line.72"></a>
<FONT color="green">073</FONT>         */<a name="line.73"></a>
<FONT color="green">074</FONT>        public Throwable getThrowable() {<a name="line.74"></a>
<FONT color="green">075</FONT>            return throwable;<a name="line.75"></a>
<FONT color="green">076</FONT>        }<a name="line.76"></a>
<FONT color="green">077</FONT>    <a name="line.77"></a>
<FONT color="green">078</FONT>        /**<a name="line.78"></a>
<FONT color="green">079</FONT>         * Adds a message.<a name="line.79"></a>
<FONT color="green">080</FONT>         *<a name="line.80"></a>
<FONT color="green">081</FONT>         * @param pattern Message pattern.<a name="line.81"></a>
<FONT color="green">082</FONT>         * @param arguments Values for replacing the placeholders in the message<a name="line.82"></a>
<FONT color="green">083</FONT>         * pattern.<a name="line.83"></a>
<FONT color="green">084</FONT>         */<a name="line.84"></a>
<FONT color="green">085</FONT>        public void addMessage(Localizable pattern,<a name="line.85"></a>
<FONT color="green">086</FONT>                               Object ... arguments) {<a name="line.86"></a>
<FONT color="green">087</FONT>            msgPatterns.add(pattern);<a name="line.87"></a>
<FONT color="green">088</FONT>            msgArguments.add(ArgUtils.flatten(arguments));<a name="line.88"></a>
<FONT color="green">089</FONT>        }<a name="line.89"></a>
<FONT color="green">090</FONT>    <a name="line.90"></a>
<FONT color="green">091</FONT>        /**<a name="line.91"></a>
<FONT color="green">092</FONT>         * Sets the context (key, value) pair.<a name="line.92"></a>
<FONT color="green">093</FONT>         * Keys are assumed to be unique within an instance. If the same key is<a name="line.93"></a>
<FONT color="green">094</FONT>         * assigned a new value, the previous one will be lost.<a name="line.94"></a>
<FONT color="green">095</FONT>         *<a name="line.95"></a>
<FONT color="green">096</FONT>         * @param key Context key (not null).<a name="line.96"></a>
<FONT color="green">097</FONT>         * @param value Context value.<a name="line.97"></a>
<FONT color="green">098</FONT>         */<a name="line.98"></a>
<FONT color="green">099</FONT>        public void setValue(String key, Object value) {<a name="line.99"></a>
<FONT color="green">100</FONT>            context.put(key, value);<a name="line.100"></a>
<FONT color="green">101</FONT>        }<a name="line.101"></a>
<FONT color="green">102</FONT>    <a name="line.102"></a>
<FONT color="green">103</FONT>        /**<a name="line.103"></a>
<FONT color="green">104</FONT>         * Gets the value associated to the given context key.<a name="line.104"></a>
<FONT color="green">105</FONT>         *<a name="line.105"></a>
<FONT color="green">106</FONT>         * @param key Context key.<a name="line.106"></a>
<FONT color="green">107</FONT>         * @return the context value or {@code null} if the key does not exist.<a name="line.107"></a>
<FONT color="green">108</FONT>         */<a name="line.108"></a>
<FONT color="green">109</FONT>        public Object getValue(String key) {<a name="line.109"></a>
<FONT color="green">110</FONT>            return context.get(key);<a name="line.110"></a>
<FONT color="green">111</FONT>        }<a name="line.111"></a>
<FONT color="green">112</FONT>    <a name="line.112"></a>
<FONT color="green">113</FONT>        /**<a name="line.113"></a>
<FONT color="green">114</FONT>         * Gets all the keys stored in the exception<a name="line.114"></a>
<FONT color="green">115</FONT>         *<a name="line.115"></a>
<FONT color="green">116</FONT>         * @return the set of keys.<a name="line.116"></a>
<FONT color="green">117</FONT>         */<a name="line.117"></a>
<FONT color="green">118</FONT>        public Set&lt;String&gt; getKeys() {<a name="line.118"></a>
<FONT color="green">119</FONT>            return context.keySet();<a name="line.119"></a>
<FONT color="green">120</FONT>        }<a name="line.120"></a>
<FONT color="green">121</FONT>    <a name="line.121"></a>
<FONT color="green">122</FONT>        /**<a name="line.122"></a>
<FONT color="green">123</FONT>         * Gets the default message.<a name="line.123"></a>
<FONT color="green">124</FONT>         *<a name="line.124"></a>
<FONT color="green">125</FONT>         * @return the message.<a name="line.125"></a>
<FONT color="green">126</FONT>         */<a name="line.126"></a>
<FONT color="green">127</FONT>        public String getMessage() {<a name="line.127"></a>
<FONT color="green">128</FONT>            return getMessage(Locale.US);<a name="line.128"></a>
<FONT color="green">129</FONT>        }<a name="line.129"></a>
<FONT color="green">130</FONT>    <a name="line.130"></a>
<FONT color="green">131</FONT>        /**<a name="line.131"></a>
<FONT color="green">132</FONT>         * Gets the message in the default locale.<a name="line.132"></a>
<FONT color="green">133</FONT>         *<a name="line.133"></a>
<FONT color="green">134</FONT>         * @return the localized message.<a name="line.134"></a>
<FONT color="green">135</FONT>         */<a name="line.135"></a>
<FONT color="green">136</FONT>        public String getLocalizedMessage() {<a name="line.136"></a>
<FONT color="green">137</FONT>            return getMessage(Locale.getDefault());<a name="line.137"></a>
<FONT color="green">138</FONT>        }<a name="line.138"></a>
<FONT color="green">139</FONT>    <a name="line.139"></a>
<FONT color="green">140</FONT>        /**<a name="line.140"></a>
<FONT color="green">141</FONT>         * Gets the message in a specified locale.<a name="line.141"></a>
<FONT color="green">142</FONT>         *<a name="line.142"></a>
<FONT color="green">143</FONT>         * @param locale Locale in which the message should be translated.<a name="line.143"></a>
<FONT color="green">144</FONT>         * @return the localized message.<a name="line.144"></a>
<FONT color="green">145</FONT>         */<a name="line.145"></a>
<FONT color="green">146</FONT>        public String getMessage(final Locale locale) {<a name="line.146"></a>
<FONT color="green">147</FONT>            return buildMessage(locale, ": ");<a name="line.147"></a>
<FONT color="green">148</FONT>        }<a name="line.148"></a>
<FONT color="green">149</FONT>    <a name="line.149"></a>
<FONT color="green">150</FONT>        /**<a name="line.150"></a>
<FONT color="green">151</FONT>         * Gets the message in a specified locale.<a name="line.151"></a>
<FONT color="green">152</FONT>         *<a name="line.152"></a>
<FONT color="green">153</FONT>         * @param locale Locale in which the message should be translated.<a name="line.153"></a>
<FONT color="green">154</FONT>         * @param separator Separator inserted between the message parts.<a name="line.154"></a>
<FONT color="green">155</FONT>         * @return the localized message.<a name="line.155"></a>
<FONT color="green">156</FONT>         */<a name="line.156"></a>
<FONT color="green">157</FONT>        public String getMessage(final Locale locale,<a name="line.157"></a>
<FONT color="green">158</FONT>                                 final String separator) {<a name="line.158"></a>
<FONT color="green">159</FONT>            return buildMessage(locale, separator);<a name="line.159"></a>
<FONT color="green">160</FONT>        }<a name="line.160"></a>
<FONT color="green">161</FONT>    <a name="line.161"></a>
<FONT color="green">162</FONT>        /**<a name="line.162"></a>
<FONT color="green">163</FONT>         * Builds a message string.<a name="line.163"></a>
<FONT color="green">164</FONT>         *<a name="line.164"></a>
<FONT color="green">165</FONT>         * @param locale Locale in which the message should be translated.<a name="line.165"></a>
<FONT color="green">166</FONT>         * @param separator Message separator.<a name="line.166"></a>
<FONT color="green">167</FONT>         * @return a localized message string.<a name="line.167"></a>
<FONT color="green">168</FONT>         */<a name="line.168"></a>
<FONT color="green">169</FONT>        private String buildMessage(Locale locale,<a name="line.169"></a>
<FONT color="green">170</FONT>                                    String separator) {<a name="line.170"></a>
<FONT color="green">171</FONT>            final StringBuilder sb = new StringBuilder();<a name="line.171"></a>
<FONT color="green">172</FONT>            int count = 0;<a name="line.172"></a>
<FONT color="green">173</FONT>            final int len = msgPatterns.size();<a name="line.173"></a>
<FONT color="green">174</FONT>            for (int i = 0; i &lt; len; i++) {<a name="line.174"></a>
<FONT color="green">175</FONT>                final Localizable pat = msgPatterns.get(i);<a name="line.175"></a>
<FONT color="green">176</FONT>                final Object[] args = msgArguments.get(i);<a name="line.176"></a>
<FONT color="green">177</FONT>                final MessageFormat fmt = new MessageFormat(pat.getLocalizedString(locale),<a name="line.177"></a>
<FONT color="green">178</FONT>                                                            locale);<a name="line.178"></a>
<FONT color="green">179</FONT>                sb.append(fmt.format(args));<a name="line.179"></a>
<FONT color="green">180</FONT>                if (++count &lt; len) {<a name="line.180"></a>
<FONT color="green">181</FONT>                    // Add a separator if there are other messages.<a name="line.181"></a>
<FONT color="green">182</FONT>                    sb.append(separator);<a name="line.182"></a>
<FONT color="green">183</FONT>                }<a name="line.183"></a>
<FONT color="green">184</FONT>            }<a name="line.184"></a>
<FONT color="green">185</FONT>    <a name="line.185"></a>
<FONT color="green">186</FONT>            return sb.toString();<a name="line.186"></a>
<FONT color="green">187</FONT>        }<a name="line.187"></a>
<FONT color="green">188</FONT>    <a name="line.188"></a>
<FONT color="green">189</FONT>        /**<a name="line.189"></a>
<FONT color="green">190</FONT>         * Serialize this object to the given stream.<a name="line.190"></a>
<FONT color="green">191</FONT>         *<a name="line.191"></a>
<FONT color="green">192</FONT>         * @param out Stream.<a name="line.192"></a>
<FONT color="green">193</FONT>         * @throws IOException This should never happen.<a name="line.193"></a>
<FONT color="green">194</FONT>         */<a name="line.194"></a>
<FONT color="green">195</FONT>        private void writeObject(ObjectOutputStream out)<a name="line.195"></a>
<FONT color="green">196</FONT>            throws IOException {<a name="line.196"></a>
<FONT color="green">197</FONT>            out.writeObject(throwable);<a name="line.197"></a>
<FONT color="green">198</FONT>            serializeMessages(out);<a name="line.198"></a>
<FONT color="green">199</FONT>            serializeContext(out);<a name="line.199"></a>
<FONT color="green">200</FONT>        }<a name="line.200"></a>
<FONT color="green">201</FONT>        /**<a name="line.201"></a>
<FONT color="green">202</FONT>         * Deserialize this object from the given stream.<a name="line.202"></a>
<FONT color="green">203</FONT>         *<a name="line.203"></a>
<FONT color="green">204</FONT>         * @param in Stream.<a name="line.204"></a>
<FONT color="green">205</FONT>         * @throws IOException This should never happen.<a name="line.205"></a>
<FONT color="green">206</FONT>         * @throws ClassNotFoundException This should never happen.<a name="line.206"></a>
<FONT color="green">207</FONT>         */<a name="line.207"></a>
<FONT color="green">208</FONT>        private void readObject(ObjectInputStream in)<a name="line.208"></a>
<FONT color="green">209</FONT>            throws IOException,<a name="line.209"></a>
<FONT color="green">210</FONT>                   ClassNotFoundException {<a name="line.210"></a>
<FONT color="green">211</FONT>            throwable = (Throwable) in.readObject();<a name="line.211"></a>
<FONT color="green">212</FONT>            deSerializeMessages(in);<a name="line.212"></a>
<FONT color="green">213</FONT>            deSerializeContext(in);<a name="line.213"></a>
<FONT color="green">214</FONT>        }<a name="line.214"></a>
<FONT color="green">215</FONT>    <a name="line.215"></a>
<FONT color="green">216</FONT>        /**<a name="line.216"></a>
<FONT color="green">217</FONT>         * Serialize  {@link #msgPatterns} and {@link #msgArguments}.<a name="line.217"></a>
<FONT color="green">218</FONT>         *<a name="line.218"></a>
<FONT color="green">219</FONT>         * @param out Stream.<a name="line.219"></a>
<FONT color="green">220</FONT>         * @throws IOException This should never happen.<a name="line.220"></a>
<FONT color="green">221</FONT>         */<a name="line.221"></a>
<FONT color="green">222</FONT>        private void serializeMessages(ObjectOutputStream out)<a name="line.222"></a>
<FONT color="green">223</FONT>            throws IOException {<a name="line.223"></a>
<FONT color="green">224</FONT>            // Step 1.<a name="line.224"></a>
<FONT color="green">225</FONT>            final int len = msgPatterns.size();<a name="line.225"></a>
<FONT color="green">226</FONT>            out.writeInt(len);<a name="line.226"></a>
<FONT color="green">227</FONT>            // Step 2.<a name="line.227"></a>
<FONT color="green">228</FONT>            for (int i = 0; i &lt; len; i++) {<a name="line.228"></a>
<FONT color="green">229</FONT>                final Localizable pat = msgPatterns.get(i);<a name="line.229"></a>
<FONT color="green">230</FONT>                // Step 3.<a name="line.230"></a>
<FONT color="green">231</FONT>                out.writeObject(pat);<a name="line.231"></a>
<FONT color="green">232</FONT>                final Object[] args = msgArguments.get(i);<a name="line.232"></a>
<FONT color="green">233</FONT>                final int aLen = args.length;<a name="line.233"></a>
<FONT color="green">234</FONT>                // Step 4.<a name="line.234"></a>
<FONT color="green">235</FONT>                out.writeInt(aLen);<a name="line.235"></a>
<FONT color="green">236</FONT>                for (int j = 0; j &lt; aLen; j++) {<a name="line.236"></a>
<FONT color="green">237</FONT>                    if (args[j] instanceof Serializable) {<a name="line.237"></a>
<FONT color="green">238</FONT>                        // Step 5a.<a name="line.238"></a>
<FONT color="green">239</FONT>                        out.writeObject(args[j]);<a name="line.239"></a>
<FONT color="green">240</FONT>                    } else {<a name="line.240"></a>
<FONT color="green">241</FONT>                        // Step 5b.<a name="line.241"></a>
<FONT color="green">242</FONT>                        out.writeObject(nonSerializableReplacement(args[j]));<a name="line.242"></a>
<FONT color="green">243</FONT>                    }<a name="line.243"></a>
<FONT color="green">244</FONT>                }<a name="line.244"></a>
<FONT color="green">245</FONT>            }<a name="line.245"></a>
<FONT color="green">246</FONT>        }<a name="line.246"></a>
<FONT color="green">247</FONT>    <a name="line.247"></a>
<FONT color="green">248</FONT>        /**<a name="line.248"></a>
<FONT color="green">249</FONT>         * Deserialize {@link #msgPatterns} and {@link #msgArguments}.<a name="line.249"></a>
<FONT color="green">250</FONT>         *<a name="line.250"></a>
<FONT color="green">251</FONT>         * @param in Stream.<a name="line.251"></a>
<FONT color="green">252</FONT>         * @throws IOException This should never happen.<a name="line.252"></a>
<FONT color="green">253</FONT>         * @throws ClassNotFoundException This should never happen.<a name="line.253"></a>
<FONT color="green">254</FONT>         */<a name="line.254"></a>
<FONT color="green">255</FONT>        private void deSerializeMessages(ObjectInputStream in)<a name="line.255"></a>
<FONT color="green">256</FONT>            throws IOException,<a name="line.256"></a>
<FONT color="green">257</FONT>                   ClassNotFoundException {<a name="line.257"></a>
<FONT color="green">258</FONT>            // Step 1.<a name="line.258"></a>
<FONT color="green">259</FONT>            final int len = in.readInt();<a name="line.259"></a>
<FONT color="green">260</FONT>            msgPatterns = new ArrayList&lt;Localizable&gt;(len);<a name="line.260"></a>
<FONT color="green">261</FONT>            msgArguments = new ArrayList&lt;Object[]&gt;(len);<a name="line.261"></a>
<FONT color="green">262</FONT>            // Step 2.<a name="line.262"></a>
<FONT color="green">263</FONT>            for (int i = 0; i &lt; len; i++) {<a name="line.263"></a>
<FONT color="green">264</FONT>                // Step 3.<a name="line.264"></a>
<FONT color="green">265</FONT>                final Localizable pat = (Localizable) in.readObject();<a name="line.265"></a>
<FONT color="green">266</FONT>                msgPatterns.add(pat);<a name="line.266"></a>
<FONT color="green">267</FONT>                // Step 4.<a name="line.267"></a>
<FONT color="green">268</FONT>                final int aLen = in.readInt();<a name="line.268"></a>
<FONT color="green">269</FONT>                final Object[] args = new Object[aLen];<a name="line.269"></a>
<FONT color="green">270</FONT>                for (int j = 0; j &lt; aLen; j++) {<a name="line.270"></a>
<FONT color="green">271</FONT>                    // Step 5.<a name="line.271"></a>
<FONT color="green">272</FONT>                    args[j] = in.readObject();<a name="line.272"></a>
<FONT color="green">273</FONT>                }<a name="line.273"></a>
<FONT color="green">274</FONT>                msgArguments.add(args);<a name="line.274"></a>
<FONT color="green">275</FONT>            }<a name="line.275"></a>
<FONT color="green">276</FONT>        }<a name="line.276"></a>
<FONT color="green">277</FONT>    <a name="line.277"></a>
<FONT color="green">278</FONT>        /**<a name="line.278"></a>
<FONT color="green">279</FONT>         * Serialize {@link #context}.<a name="line.279"></a>
<FONT color="green">280</FONT>         *<a name="line.280"></a>
<FONT color="green">281</FONT>         * @param out Stream.<a name="line.281"></a>
<FONT color="green">282</FONT>         * @throws IOException This should never happen.<a name="line.282"></a>
<FONT color="green">283</FONT>         */<a name="line.283"></a>
<FONT color="green">284</FONT>        private void serializeContext(ObjectOutputStream out)<a name="line.284"></a>
<FONT color="green">285</FONT>            throws IOException {<a name="line.285"></a>
<FONT color="green">286</FONT>            // Step 1.<a name="line.286"></a>
<FONT color="green">287</FONT>            final int len = context.keySet().size();<a name="line.287"></a>
<FONT color="green">288</FONT>            out.writeInt(len);<a name="line.288"></a>
<FONT color="green">289</FONT>            for (String key : context.keySet()) {<a name="line.289"></a>
<FONT color="green">290</FONT>                // Step 2.<a name="line.290"></a>
<FONT color="green">291</FONT>                out.writeObject(key);<a name="line.291"></a>
<FONT color="green">292</FONT>                final Object value = context.get(key);<a name="line.292"></a>
<FONT color="green">293</FONT>                if (value instanceof Serializable) {<a name="line.293"></a>
<FONT color="green">294</FONT>                    // Step 3a.<a name="line.294"></a>
<FONT color="green">295</FONT>                    out.writeObject(value);<a name="line.295"></a>
<FONT color="green">296</FONT>                } else {<a name="line.296"></a>
<FONT color="green">297</FONT>                    // Step 3b.<a name="line.297"></a>
<FONT color="green">298</FONT>                    out.writeObject(nonSerializableReplacement(value));<a name="line.298"></a>
<FONT color="green">299</FONT>                }<a name="line.299"></a>
<FONT color="green">300</FONT>            }<a name="line.300"></a>
<FONT color="green">301</FONT>        }<a name="line.301"></a>
<FONT color="green">302</FONT>    <a name="line.302"></a>
<FONT color="green">303</FONT>        /**<a name="line.303"></a>
<FONT color="green">304</FONT>         * Deserialize {@link #context}.<a name="line.304"></a>
<FONT color="green">305</FONT>         *<a name="line.305"></a>
<FONT color="green">306</FONT>         * @param in Stream.<a name="line.306"></a>
<FONT color="green">307</FONT>         * @throws IOException This should never happen.<a name="line.307"></a>
<FONT color="green">308</FONT>         * @throws ClassNotFoundException This should never happen.<a name="line.308"></a>
<FONT color="green">309</FONT>         */<a name="line.309"></a>
<FONT color="green">310</FONT>        private void deSerializeContext(ObjectInputStream in)<a name="line.310"></a>
<FONT color="green">311</FONT>            throws IOException,<a name="line.311"></a>
<FONT color="green">312</FONT>                   ClassNotFoundException {<a name="line.312"></a>
<FONT color="green">313</FONT>            // Step 1.<a name="line.313"></a>
<FONT color="green">314</FONT>            final int len = in.readInt();<a name="line.314"></a>
<FONT color="green">315</FONT>            context = new HashMap&lt;String, Object&gt;();<a name="line.315"></a>
<FONT color="green">316</FONT>            for (int i = 0; i &lt; len; i++) {<a name="line.316"></a>
<FONT color="green">317</FONT>                // Step 2.<a name="line.317"></a>
<FONT color="green">318</FONT>                final String key = (String) in.readObject();<a name="line.318"></a>
<FONT color="green">319</FONT>                // Step 3.<a name="line.319"></a>
<FONT color="green">320</FONT>                final Object value = in.readObject();<a name="line.320"></a>
<FONT color="green">321</FONT>                context.put(key, value);<a name="line.321"></a>
<FONT color="green">322</FONT>            }<a name="line.322"></a>
<FONT color="green">323</FONT>        }<a name="line.323"></a>
<FONT color="green">324</FONT>    <a name="line.324"></a>
<FONT color="green">325</FONT>        /**<a name="line.325"></a>
<FONT color="green">326</FONT>         * Replaces a non-serializable object with an error message string.<a name="line.326"></a>
<FONT color="green">327</FONT>         *<a name="line.327"></a>
<FONT color="green">328</FONT>         * @param obj Object that does not implement the {@code Serializable}<a name="line.328"></a>
<FONT color="green">329</FONT>         * interface.<a name="line.329"></a>
<FONT color="green">330</FONT>         * @return a string that mentions which class could not be serialized.<a name="line.330"></a>
<FONT color="green">331</FONT>         */<a name="line.331"></a>
<FONT color="green">332</FONT>        private String nonSerializableReplacement(Object obj) {<a name="line.332"></a>
<FONT color="green">333</FONT>            return "[Object could not be serialized: " + obj.getClass().getName() + "]";<a name="line.333"></a>
<FONT color="green">334</FONT>        }<a name="line.334"></a>
<FONT color="green">335</FONT>    }<a name="line.335"></a>




























































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